Automatic detection device for load power of power distribution cabinet

Abstract

The utility model discloses a power distribution cabinet load power automatic detection device, and belongs to the technical field of power detection. A power distribution cabinet load power automatic detection device comprises a mutual inductance module, a rectification module, a control switch, a light emitting unit, a photodiode, an amplification module, a control module, a power detection module and a communication module. The mutual inductance module is electrically connected with a power supply bus in the power distribution cabinet, the mutual inductance module is electrically connected with the rectification module, and the rectification module is connected in series with the control switch and the light-emitting unit; the control module is electrically connected with the control switch, the power detection module, the amplification module and the communication module; the mutual inductance module is arranged to collect the current of the power supply bus in the power distribution cabinet, and the control switch is utilized to control the conduction state of the light emitting unit, so that when the power accessed to the load of the power distribution cabinet is too large, an optical signal is generated as alarm information, and the power detection module is matched to further improve the accuracy of power detection of the load of the power distribution cabinet; and the safety redundancy of the device is increased.

Description

Technical Field

[0001] The present application relates to the technical field of power detection, and more specifically, to an automatic detection device for load power of a distribution cabinet. Background Art

[0002] With the development of technology, the functional requirements for power distribution cabinets are getting higher and higher. Among them, power detection equipment is installed in the power distribution cabinet to monitor the operation of the load in real time, and abnormal power fluctuations of the circuit or equipment can be discovered in time. This helps to quickly locate faults, reduce downtime, and improve production efficiency. At the same time, the analysis and optimization of power detection data can also improve the design and operation efficiency of the distribution system, reduce energy consumption costs, and ensure the safety of personnel and equipment.

[0003] After searching, the patent document with the existing publication number CN207039193U provides a low-voltage power automatic switching distribution cabinet. The device receives information from the power detection module through the MCU module. When overloaded, it uses the principle of step-by-step control to reduce the load and control the load control module.

[0004] Since the complexity of the electromagnetic field inside the distribution cabinet may affect the normal operation of the power detection module and have an impact on the decision of the control module, using a single power detection module as the decision basis of the control module is difficult to meet the needs of safety redundancy.

[0005] In view of this, we propose an automatic detection device for load power of distribution cabinet. Utility Model Content

[0006] 1. Technical issues to be solved

[0007] The purpose of the present application is to provide a device for automatically detecting load power of a distribution cabinet to solve the problems raised in the above-mentioned background technology.

[0008] 2. Technical solution

[0009] This application is implemented through the following technical solutions:

[0010] An automatic detection device for load power of a power distribution cabinet, comprising a mutual inductance module, a rectifier module, a control switch, a light-emitting unit, a photodiode, an amplification module, a control module, a power detection module and a communication module;

[0011] The mutual inductance module is electrically connected to the power supply bus in the power distribution cabinet, the mutual inductance module is electrically connected to the rectifier module, and the rectifier module is connected in series with the control switch and the light-emitting unit;

[0012] The control module is electrically connected to the control switch, the power detection module, the amplification module and the communication module.

[0013] As an optional solution of the technical solution of this application document, the positive terminal of the light-emitting unit is electrically connected to a grounding capacitor.

[0014] As an optional solution of the technical solution of the present application document, a voltage-stabilizing diode is connected in parallel at both ends of the light-emitting unit, and the voltage-stabilizing diode is reversely connected to the circuit.

[0015] As an optional solution of the technical solution of this application document, the light-emitting unit is connected to the photodiode via an optical fiber.

[0016] As an optional solution of the technical solution of this application document, the control switch adopts a field effect tube, and the control module is connected to the gate of the field effect tube.

[0017] As an optional solution of the technical solution of this application document, it also includes a storage module, which is electrically connected to the control module.

[0018] 3. Beneficial effects

[0019] Compared with the prior art, the beneficial effects of this application are:

[0020] 1. This application collects the current of the power supply bus in the distribution cabinet by setting a mutual inductance module, and uses a control switch to control the conduction state of the light-emitting unit. When the power of the load connected to the distribution cabinet is too large, it can generate an optical signal as an alarm information, and cooperate with the power detection module to further increase the accuracy of the distribution cabinet load power detection and increase the safety redundancy of the device.

[0021] 2. This application uses a field effect tube as a control switch, which can adjust the gate voltage of the field effect tube through the control module, control the conduction voltage of the field effect tube, and adapt to the needs of load power detection in different distribution cabinets.

[0022] 3. This application uses optical fiber to connect the light-emitting unit and the photodiode, which can adjust the installation position of the photodiode and the amplifier module, avoid the complex electromagnetic field and ambient light inside the distribution cabinet, reduce the adverse effects of the complex electromagnetic field in the distribution cabinet on the normal operation of the amplifier module, and increase the power detection accuracy of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall structure of an automatic detection device for load power of a power distribution cabinet;

[0024] Figure 2 It is a schematic diagram of the overall structure of an automatic detection device for load power of a power distribution cabinet;

[0025] In the figure: 1. Mutual inductance module; 2. Rectification module; 3. Control switch; 4. Light-emitting unit; 5. Photodiode; 6. Amplification module; 7. Grounding capacitor; 8. Zener diode. DETAILED DESCRIPTION

[0026] The technical solution of the present application will be described clearly and completely below in conjunction with the accompanying drawings.

[0027] See also Figure 1 and Figure 2 ,The present application provides a distribution cabinet load power automatic detection device, including a mutual inductance module 1, a rectifier module 2, a control switch 3, a light emitting unit 4, a photodiode 5, an amplification module 6, a control module, a power detection module, a communication module, and a storage module;

[0028] The power detection module is used to detect the load power of the power distribution cabinet, and the control module is used to obtain the information of the power detection module and write the load power information into the storage module.

[0029] The mutual inductance module 1 uses the power supply bus in the distribution cabinet as the primary winding, and the secondary winding in the mutual inductance module 1 is connected to the rectifier module 2. The rectifier module 2 adjusts the induced current generated by the secondary winding to direct current and outputs the current to the closed loop formed by the control switch 3 and the light-emitting unit 4 in series.

[0030] In this solution, the control switch 3 uses a field effect tube, and the gate of the field effect tube is connected to the control module. The control module can control the voltage of the gate of the field effect tube, thereby controlling the conduction voltage of the field effect tube.

[0031] When the load power connected to the power supply bus in the power distribution cabinet is too large, resulting in an increase in the current on the internal power supply bus, the induced electromotive force generated by the mutual inductance module 1 increases, the control switch 3 is turned on, and the light-emitting unit 4 works normally. The photodiode 5 receives the light signal of the light-emitting unit 4, generates current, and amplifies it through the amplifier module 6 and outputs it to the control module to realize the current detection of the power supply bus in the power distribution cabinet.

[0032] When the control module receives the electrical signal generated by the light-emitting unit 4, it can establish a connection with the server through the communication module, and send alarm information and the current load power of the distribution cabinet to the server, thereby realizing automatic detection and alarm of the load power of the distribution cabinet, and increasing the safety redundancy of the load power detection of the distribution cabinet.

[0033] In addition, the positive terminal of the light-emitting unit 4 can also be connected to a grounding capacitor 7 to eliminate the induced current generated in the circuit. At the same time, a voltage-stabilizing diode 8 can be connected in parallel at both ends of the light-emitting unit 4, and the voltage-stabilizing diode 8 can be reversely connected to the circuit to achieve overvoltage protection for the light-emitting unit 4. The light-emitting unit 4 and the photodiode 5 are connected by optical fiber, so that the circuit formed by the photodiode 5 and the amplification module 6 can be far away from the power supply bus in the distribution cabinet, reducing the adverse effects of the complex electromagnetic field in the distribution cabinet on the normal operation of the amplification module 6, and can also avoid interference from external ambient light by adjusting the installation position of the photodiode 5.

[0034] The control module can establish a connection with the server through the communication module, and adjust the gate voltage of the field effect tube according to the received signal to adapt to the detection requirements of different load powers.

Claims

1. A device for automatically detecting load power of a power distribution cabinet, characterized in that: It comprises a mutual inductance module (1), a rectification module (2), a control switch (3), a light-emitting unit (4), a photodiode (5), an amplification module (6), a control module, a power detection module and a communication module; The mutual inductance module (1) is electrically connected to a power supply busbar in a power distribution cabinet, the mutual inductance module (1) is electrically connected to a rectifier module (2), and the rectifier module (2) is connected in series with a control switch (3) and a light-emitting unit (4); The control module is electrically connected to the control switch (3), the power detection module, the amplification module (6), and the communication module.

2. The automatic detection device for load power of a power distribution cabinet according to claim 1 is characterized in that: The positive terminal of the light-emitting unit (4) is electrically connected to a grounding capacitor (7).

3. The automatic detection device for load power of a distribution cabinet according to claim 1 is characterized in that: A voltage-stabilizing diode (8) is connected in parallel to both ends of the light-emitting unit (4), and the voltage-stabilizing diode (8) is reversely connected to the circuit.

4. The automatic detection device for load power of a power distribution cabinet according to claim 1 is characterized in that: The light emitting unit (4) is connected to the photodiode (5) via an optical fiber.

5. The automatic detection device for load power of a power distribution cabinet according to claim 1 is characterized in that: The control switch (3) adopts a field effect tube, and the control module is connected to the gate of the field effect tube.

6. The automatic detection device for load power of a power distribution cabinet according to claim 1 is characterized in that: It also includes a storage module, which is electrically connected to the control module.

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